Stock watering tank



FIG. 1 is a perspective view taken from the top, front and left end of astock watering tank embodying my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right end elevational view thereof;

FIG. 4 is a top plan view thereof.

FIG. 5 is a bottom plan view thereof.

FIG. 6 is a cross sectional view taken on line 6--6 of FIG. 3;

FIG. 7 is a cross sectional view taken on line 7--7 of FIG. 2.

The ornamental design for a stock watering tank, as shown and described.